[WP Smush Pro] I have Smush PRO/Hummingbird PRO -> CDN issue

I have SMUSH Pro and have bulk smushed all my images. I want to take advantage of your CDN however every time I use it, images within my blog post disappear as well as the sponsor ads in the right side bar (I use widgets with either HTML or Image to do the ads). As soon as I deactivate the CDN the images reappear. I have had it happened now on 2 hosting sites (Bluehost and now Siteground which I just transferred over this week).